diff --git a/NEXT_CHANGELOG.md b/NEXT_CHANGELOG.md
index b4b9c6b0a3..4b8ed3d9c6 100644
--- a/NEXT_CHANGELOG.md
+++ b/NEXT_CHANGELOG.md
@@ -10,6 +10,7 @@
 
 ### Bundles
 * Add new Lakeflow Pipelines support for bundle generate ([#3568](https://github.com/databricks/cli/pull/3568))
+* Fix bundle deploy to not update permissions or grants for unbound resources ([#3642](https://github.com/databricks/cli/pull/3642))
 * Introduce new bundle variable: `${workspace.current_user.domain_friendly_name}` ([#3623](https://github.com/databricks/cli/pull/3623))
 
 ### API Changes
diff --git a/acceptance/bundle/deploy/experimental-python/output.txt b/acceptance/bundle/deploy/experimental-python/output.txt
index 590d7cd350..9dad22cf1d 100644
--- a/acceptance/bundle/deploy/experimental-python/output.txt
+++ b/acceptance/bundle/deploy/experimental-python/output.txt
@@ -8,6 +8,7 @@ Deployment complete!
 >>> [CLI] jobs list --output json
 [
   {
+    "creator_user_name": "[USERNAME]",
     "job_id": [NUMID],
     "settings": {
       "deployment": {
diff --git a/acceptance/bundle/deploy/python-notebook/output.txt b/acceptance/bundle/deploy/python-notebook/output.txt
index 6e2f2f8de7..704430ada4 100644
--- a/acceptance/bundle/deploy/python-notebook/output.txt
+++ b/acceptance/bundle/deploy/python-notebook/output.txt
@@ -8,6 +8,7 @@ Deployment complete!
 >>> [CLI] jobs list --output json
 [
   {
+    "creator_user_name": "[USERNAME]",
     "job_id": [NUMID],
     "settings": {
       "deployment": {
diff --git a/acceptance/bundle/deployment/unbind/grants/databricks.yml.tmpl b/acceptance/bundle/deployment/unbind/grants/databricks.yml.tmpl
new file mode 100644
index 0000000000..ca0346b412
--- /dev/null
+++ b/acceptance/bundle/deployment/unbind/grants/databricks.yml.tmpl
@@ -0,0 +1,19 @@
+bundle:
+  name: unbind_grants-$UNIQUE_NAME
+
+workspace:
+  root_path: ~/.bundle/$UNIQUE_NAME
+
+variables:
+  suffix:
+    default: ""
+    description: "Suffix for the schema name"
+
+resources:
+  schemas:
+    schema_1:
+      name: "test-schema-$UNIQUE_NAME${var.suffix}"
+      catalog_name: "main"
+      grants:
+        - principal: "account users"
+          privileges: ["CREATE_VOLUME", "SELECT"]
diff --git a/acceptance/bundle/deployment/unbind/grants/out.test.toml b/acceptance/bundle/deployment/unbind/grants/out.test.toml
new file mode 100644
index 0000000000..8409922737
--- /dev/null
+++ b/acceptance/bundle/deployment/unbind/grants/out.test.toml
@@ -0,0 +1,7 @@
+Local = true
+Cloud = true
+RequiresUnityCatalog = true
+
+[EnvMatrix]
+  DATABRICKS_BUNDLE_ENGINE = ["terraform"]
+  Ignore = [".databricks"]
diff --git a/acceptance/bundle/deployment/unbind/grants/output.txt b/acceptance/bundle/deployment/unbind/grants/output.txt
new file mode 100644
index 0000000000..df6ed2d492
--- /dev/null
+++ b/acceptance/bundle/deployment/unbind/grants/output.txt
@@ -0,0 +1,49 @@
+
+>>> [CLI] bundle deploy
+Uploading bundle files to /Workspace/Users/[USERNAME]/.bundle/[UNIQUE_NAME]/files...
+Deploying resources...
+Updating deployment state...
+Deployment complete!
+
+>>> [CLI] grants get schema main.test-schema-[UNIQUE_NAME] --output json
+{
+  "principal": "account users",
+  "privileges": [
+    "CREATE_VOLUME",
+    "SELECT"
+  ]
+}
+
+>>> [CLI] bundle deployment unbind schema_1
+Updating deployment state...
+
+>>> [CLI] bundle deploy --var suffix=another
+Uploading bundle files to /Workspace/Users/[USERNAME]/.bundle/[UNIQUE_NAME]/files...
+Deploying resources...
+Updating deployment state...
+Deployment complete!
+
+=== Grants should be the same as before unbind
+>>> [CLI] grants get schema main.test-schema-[UNIQUE_NAME] --output json
+{
+  "principal": "account users",
+  "privileges": [
+    "CREATE_VOLUME",
+    "SELECT"
+  ]
+}
+
+>>> [CLI] bundle destroy --auto-approve
+The following resources will be deleted:
+  delete schema schema_1
+
+This action will result in the deletion of the following UC schemas. Any underlying data may be lost:
+  delete schema schema_1
+
+All files and directories at the following location will be deleted: /Workspace/Users/[USERNAME]/.bundle/[UNIQUE_NAME]
+
+Deleting files...
+Destroy complete!
+
+>>> [CLI] schemas delete main.test-schema-[UNIQUE_NAME]
+0
diff --git a/acceptance/bundle/deployment/unbind/grants/script b/acceptance/bundle/deployment/unbind/grants/script
new file mode 100644
index 0000000000..f6da92a7e6
--- /dev/null
+++ b/acceptance/bundle/deployment/unbind/grants/script
@@ -0,0 +1,20 @@
+envsubst < databricks.yml.tmpl > databricks.yml
+
+cleanup() {
+    trace $CLI bundle destroy --auto-approve
+    if [[ -n "$schema_id" ]]; then
+        trace $CLI schemas delete $schema_id
+    fi
+    echo $?
+}
+trap cleanup EXIT
+
+trace $CLI bundle deploy
+schema_id=$($CLI bundle summary --output json | jq -r '.resources.schemas.schema_1.id')
+trace $CLI grants get schema $schema_id --output json | jq '.privilege_assignments[] | select(.principal == "account users")'
+
+trace $CLI bundle deployment unbind schema_1
+trace $CLI bundle deploy --var "suffix=another"
+
+title "Grants should be the same as before unbind"
+trace $CLI grants get schema $schema_id --output json | jq '.privilege_assignments[] | select(.principal == "account users")'
diff --git a/acceptance/bundle/deployment/unbind/grants/test.toml b/acceptance/bundle/deployment/unbind/grants/test.toml
new file mode 100644
index 0000000000..ca6de773cd
--- /dev/null
+++ b/acceptance/bundle/deployment/unbind/grants/test.toml
@@ -0,0 +1,8 @@
+RequiresUnityCatalog = true
+
+[EnvMatrix]
+  DATABRICKS_BUNDLE_ENGINE = ["terraform"]
+
+Ignore = [
+    ".databricks",
+]
diff --git a/acceptance/bundle/deployment/unbind/job/output.txt b/acceptance/bundle/deployment/unbind/job/output.txt
index f3b5963b53..482431cae7 100644
--- a/acceptance/bundle/deployment/unbind/job/output.txt
+++ b/acceptance/bundle/deployment/unbind/job/output.txt
@@ -18,6 +18,7 @@ Deployment complete!
 
 >>> [CLI] jobs get [NUMID] --output json
 {
+  "creator_user_name":"[USERNAME]",
   "job_id":[NUMID],
   "settings": {
     "deployment": {
diff --git a/acceptance/bundle/deployment/unbind/permissions/databricks.yml.tmpl b/acceptance/bundle/deployment/unbind/permissions/databricks.yml.tmpl
new file mode 100644
index 0000000000..206eee9d19
--- /dev/null
+++ b/acceptance/bundle/deployment/unbind/permissions/databricks.yml.tmpl
@@ -0,0 +1,13 @@
+bundle:
+  name: unbind_permissions
+
+workspace:
+  root_path: "~/.bundle/$UNIQUE_NAME"
+
+resources:
+  jobs:
+    job_1:
+      name: "Job name"
+      permissions:
+        - group_name: users
+          level: CAN_MANAGE
diff --git a/acceptance/bundle/deployment/unbind/permissions/out.test.toml b/acceptance/bundle/deployment/unbind/permissions/out.test.toml
new file mode 100644
index 0000000000..4dccab7df1
--- /dev/null
+++ b/acceptance/bundle/deployment/unbind/permissions/out.test.toml
@@ -0,0 +1,6 @@
+Local = true
+Cloud = true
+
+[EnvMatrix]
+  DATABRICKS_BUNDLE_ENGINE = ["terraform"]
+  Ignore = [".databricks"]
diff --git a/acceptance/bundle/deployment/unbind/permissions/output.txt b/acceptance/bundle/deployment/unbind/permissions/output.txt
new file mode 100644
index 0000000000..d43b51fdd5
--- /dev/null
+++ b/acceptance/bundle/deployment/unbind/permissions/output.txt
@@ -0,0 +1,52 @@
+
+>>> [CLI] bundle deploy
+Uploading bundle files to /Workspace/Users/[USERNAME]/.bundle/[UNIQUE_NAME]/files...
+Deploying resources...
+Updating deployment state...
+Deployment complete!
+
+>>> [CLI] bundle summary --output json
+
+>>> [CLI] jobs get-permissions [NUMID] --output json
+{
+  "all_permissions": [
+    {
+      "inherited": false,
+      "permission_level": "CAN_MANAGE"
+    }
+  ],
+  "group_name": "users"
+}
+
+>>> [CLI] bundle deployment unbind job_1
+Updating deployment state...
+
+>>> [CLI] bundle deploy
+Uploading bundle files to /Workspace/Users/[USERNAME]/.bundle/[UNIQUE_NAME]/files...
+Deploying resources...
+Updating deployment state...
+Deployment complete!
+
+=== Permissions should be the same as before unbind
+>>> [CLI] jobs get-permissions [NUMID] --output json
+{
+  "all_permissions": [
+    {
+      "inherited": false,
+      "permission_level": "CAN_MANAGE"
+    }
+  ],
+  "group_name": "users"
+}
+
+>>> [CLI] bundle destroy --auto-approve
+The following resources will be deleted:
+  delete job job_1
+
+All files and directories at the following location will be deleted: /Workspace/Users/[USERNAME]/.bundle/[UNIQUE_NAME]
+
+Deleting files...
+Destroy complete!
+
+>>> [CLI] jobs delete [NUMID]
+0
diff --git a/acceptance/bundle/deployment/unbind/permissions/script b/acceptance/bundle/deployment/unbind/permissions/script
new file mode 100644
index 0000000000..078e3c3af6
--- /dev/null
+++ b/acceptance/bundle/deployment/unbind/permissions/script
@@ -0,0 +1,18 @@
+envsubst < databricks.yml.tmpl > databricks.yml
+
+cleanup() {
+    trace $CLI bundle destroy --auto-approve
+    trace $CLI jobs delete $job_id
+    echo $?
+}
+trap cleanup EXIT
+
+trace $CLI bundle deploy
+job_id=$(trace $CLI bundle summary --output json | jq -r '.resources.jobs.job_1.id')
+trace $CLI jobs get-permissions $job_id --output json | jq '.access_control_list[] | select(.group_name == "users")'
+
+trace $CLI bundle deployment unbind job_1
+trace $CLI bundle deploy
+
+title "Permissions should be the same as before unbind"
+trace $CLI jobs get-permissions $job_id --output json | jq '.access_control_list[] | select(.group_name == "users")'
diff --git a/acceptance/bundle/deployment/unbind/permissions/test.toml b/acceptance/bundle/deployment/unbind/permissions/test.toml
new file mode 100644
index 0000000000..0708e106d0
--- /dev/null
+++ b/acceptance/bundle/deployment/unbind/permissions/test.toml
@@ -0,0 +1,6 @@
+[EnvMatrix]
+  DATABRICKS_BUNDLE_ENGINE = ["terraform"]
+
+Ignore = [
+    ".databricks",
+]
diff --git a/acceptance/bundle/deployment/unbind/python-job/output.txt b/acceptance/bundle/deployment/unbind/python-job/output.txt
index 95ef280a81..acfdafa930 100644
--- a/acceptance/bundle/deployment/unbind/python-job/output.txt
+++ b/acceptance/bundle/deployment/unbind/python-job/output.txt
@@ -18,6 +18,7 @@ Deployment complete!
 
 >>> [CLI] jobs get [NUMID] --output json
 {
+  "creator_user_name":"[USERNAME]",
   "job_id":[NUMID],
   "settings": {
     "deployment": {
diff --git a/acceptance/bundle/resource_deps/jobs_update/output.txt b/acceptance/bundle/resource_deps/jobs_update/output.txt
index 26ab67029b..10cffda960 100644
--- a/acceptance/bundle/resource_deps/jobs_update/output.txt
+++ b/acceptance/bundle/resource_deps/jobs_update/output.txt
@@ -153,6 +153,7 @@ Deployment complete!
 
 >>> [CLI] jobs get [BAR_ID]
 {
+  "creator_user_name":"[USERNAME]",
   "job_id":[BAR_ID],
   "settings": {
     "deployment": {
diff --git a/bundle/deploy/terraform/unbind.go b/bundle/deploy/terraform/unbind.go
index 494cb7ef1f..6eeb323f16 100644
--- a/bundle/deploy/terraform/unbind.go
+++ b/bundle/deploy/terraform/unbind.go
@@ -10,8 +10,9 @@ import (
 )
 
 type unbind struct {
-	resourceType string
-	resourceKey  string
+	bundleType     string
+	tfResourceType string
+	resourceKey    string
 }
 
 func (m *unbind) Apply(ctx context.Context, b *bundle.Bundle) diag.Diagnostics {
@@ -25,11 +26,32 @@ func (m *unbind) Apply(ctx context.Context, b *bundle.Bundle) diag.Diagnostics {
 		return diag.Errorf("terraform init: %v", err)
 	}
 
-	err = tf.StateRm(ctx, fmt.Sprintf("%s.%s", m.resourceType, m.resourceKey))
+	err = tf.StateRm(ctx, fmt.Sprintf("%s.%s", m.tfResourceType, m.resourceKey))
 	if err != nil {
 		return diag.Errorf("terraform state rm: %v", err)
 	}
 
+	// Also remove the permission if it exists
+	// First check terraform state list to see if the permission exists
+	state, err := tf.Show(ctx)
+	if err != nil {
+		return diag.Errorf("terraform show: %v", err)
+	}
+
+	if state.Values == nil || state.Values.RootModule == nil || state.Values.RootModule.Resources == nil {
+		return nil
+	}
+
+	for _, resource := range state.Values.RootModule.Resources {
+		if resource.Address == fmt.Sprintf("databricks_permissions.%s_%s", m.bundleType, m.resourceKey) ||
+			resource.Address == fmt.Sprintf("databricks_grants.%s_%s", m.bundleType, m.resourceKey) {
+			err = tf.StateRm(ctx, resource.Address)
+			if err != nil {
+				return diag.Errorf("terraform state rm: %v", err)
+			}
+		}
+	}
+
 	return nil
 }
 
@@ -37,6 +59,6 @@ func (*unbind) Name() string {
 	return "terraform.Unbind"
 }
 
-func Unbind(resourceType, resourceKey string) bundle.Mutator {
-	return &unbind{resourceType: resourceType, resourceKey: resourceKey}
+func Unbind(bundleType, tfResourceType, resourceKey string) bundle.Mutator {
+	return &unbind{bundleType: bundleType, tfResourceType: tfResourceType, resourceKey: resourceKey}
 }
diff --git a/bundle/phases/bind.go b/bundle/phases/bind.go
index afc42a639c..8d8f5ff7a1 100644
--- a/bundle/phases/bind.go
+++ b/bundle/phases/bind.go
@@ -32,7 +32,7 @@ func Bind(ctx context.Context, b *bundle.Bundle, opts *terraform.BindOptions) {
 	)
 }
 
-func Unbind(ctx context.Context, b *bundle.Bundle, resourceType, resourceKey string) {
+func Unbind(ctx context.Context, b *bundle.Bundle, bundleType, tfResourceType, resourceKey string) {
 	log.Info(ctx, "Phase: unbind")
 
 	bundle.ApplyContext(ctx, b, lock.Acquire())
@@ -48,7 +48,7 @@ func Unbind(ctx context.Context, b *bundle.Bundle, resourceType, resourceKey str
 		statemgmt.StatePull(),
 		terraform.Interpolate(),
 		terraform.Write(),
-		terraform.Unbind(resourceType, resourceKey),
+		terraform.Unbind(bundleType, tfResourceType, resourceKey),
 		statemgmt.StatePush(),
 	)
 }
diff --git a/cmd/bundle/deployment/unbind.go b/cmd/bundle/deployment/unbind.go
index c0ebe52661..0c9d399c9d 100644
--- a/cmd/bundle/deployment/unbind.go
+++ b/cmd/bundle/deployment/unbind.go
@@ -76,8 +76,9 @@ To re-bind the resource later, use:
 			b.Config.Bundle.Deployment.Lock.Force = forceLock
 		})
 
-		tfName := terraform.GroupToTerraformName[resource.ResourceDescription().PluralName]
-		phases.Unbind(ctx, b, tfName, args[0])
+		rd := resource.ResourceDescription()
+		tfName := terraform.GroupToTerraformName[rd.PluralName]
+		phases.Unbind(ctx, b, rd.SingularName, tfName, args[0])
 		if logdiag.HasError(ctx) {
 			return root.ErrAlreadyPrinted
 		}
diff --git a/libs/testserver/fake_workspace.go b/libs/testserver/fake_workspace.go
index 00e85d3453..9918cc1888 100644
--- a/libs/testserver/fake_workspace.go
+++ b/libs/testserver/fake_workspace.go
@@ -60,16 +60,17 @@ type FakeWorkspace struct {
 	repoIdByPath map[string]int64
 
 	// normally, ids are not sequential, but we make them sequential for deterministic diff
-	nextJobId    int64
-	nextJobRunId int64
-	Jobs         map[int64]jobs.Job
-	JobRuns      map[int64]jobs.Run
-
+	nextJobId       int64
+	nextJobRunId    int64
+	Jobs            map[int64]jobs.Job
+	JobRuns         map[int64]jobs.Run
+	JobPermissions  map[string][]jobs.JobAccessControlRequest
 	Pipelines       map[string]pipelines.GetPipelineResponse
 	PipelineUpdates map[string]bool
 	Monitors        map[string]catalog.MonitorInfo
 	Apps            map[string]apps.App
 	Schemas         map[string]catalog.SchemaInfo
+	SchemasGrants   map[string][]catalog.PrivilegeAssignment
 	Volumes         map[string]catalog.VolumeInfo
 	Dashboards      map[string]dashboards.Dashboard
 	SqlWarehouses   map[string]sql.GetWarehouseResponse
@@ -153,6 +154,8 @@ func NewFakeWorkspace(url, token string) *FakeWorkspace {
 
 		Jobs:                 map[int64]jobs.Job{},
 		JobRuns:              map[int64]jobs.Run{},
+		JobPermissions:       map[string][]jobs.JobAccessControlRequest{},
+		SchemasGrants:        map[string][]catalog.PrivilegeAssignment{},
 		nextJobId:            TestJobID,
 		nextJobRunId:         TestRunID,
 		Pipelines:            map[string]pipelines.GetPipelineResponse{},
diff --git a/libs/testserver/handlers.go b/libs/testserver/handlers.go
index 256e3766e9..a0ab2070eb 100644
--- a/libs/testserver/handlers.go
+++ b/libs/testserver/handlers.go
@@ -349,6 +349,14 @@ func AddDefaultHandlers(server *Server) {
 		return MapDelete(req.Workspace, req.Workspace.Schemas, req.Vars["full_name"])
 	})
 
+	server.Handle("PATCH", "/api/2.1/unity-catalog/permissions/schema/{full_name}", func(req Request) any {
+		return req.Workspace.SchemasUpdateGrants(req, req.Vars["full_name"])
+	})
+
+	server.Handle("GET", "/api/2.1/unity-catalog/permissions/schema/{full_name}", func(req Request) any {
+		return req.Workspace.SchemasGetGrants(req, req.Vars["full_name"])
+	})
+
 	// Volumes:
 
 	server.Handle("GET", "/api/2.1/unity-catalog/volumes/{full_name}", func(req Request) any {
@@ -505,4 +513,12 @@ func AddDefaultHandlers(server *Server) {
 	server.Handle("DELETE", "/api/2.0/database/synced_tables/{name}", func(req Request) any {
 		return MapDelete(req.Workspace, req.Workspace.SyncedDatabaseTables, req.Vars["name"])
 	})
+
+	server.Handle("PUT", "/api/2.0/permissions/jobs/{job_id}", func(req Request) any {
+		return req.Workspace.JobsUpdatePermissions(req, req.Vars["job_id"])
+	})
+
+	server.Handle("GET", "/api/2.0/permissions/jobs/{job_id}", func(req Request) any {
+		return req.Workspace.JobsGetPermissions(req, req.Vars["job_id"])
+	})
 }
diff --git a/libs/testserver/jobs.go b/libs/testserver/jobs.go
index 334898a306..45c368b9e2 100644
--- a/libs/testserver/jobs.go
+++ b/libs/testserver/jobs.go
@@ -31,7 +31,9 @@ func (s *FakeWorkspace) JobsCreate(req Request) Response {
 		}
 	}
 
-	s.Jobs[jobId] = jobs.Job{JobId: jobId, Settings: &jobSettings}
+	// CreatorUserName field is used by TF to check if the resource exists or not. CreatorUserName should be non-empty for the resource to be considered as "exists"
+	// https://github.com/databricks/terraform-provider-databricks/blob/main/permissions/permission_definitions.go#L108
+	s.Jobs[jobId] = jobs.Job{JobId: jobId, Settings: &jobSettings, CreatorUserName: TestUser.UserName}
 	return Response{Body: jobs.CreateResponse{JobId: jobId}}
 }
 
@@ -145,6 +147,64 @@ func (s *FakeWorkspace) JobsGetRun(req Request) Response {
 	return Response{Body: run}
 }
 
+func (s *FakeWorkspace) JobsUpdatePermissions(req Request, jobId string) Response {
+	var request jobs.JobPermissionsRequest
+	if err := json.Unmarshal(req.Body, &request); err != nil {
+		return Response{
+			StatusCode: 400,
+			Body:       fmt.Sprintf("request parsing error: %s", err),
+		}
+	}
+
+	defer s.LockUnlock()()
+
+	s.JobPermissions[jobId] = request.AccessControlList
+	var acl []jobs.JobAccessControlResponse
+	for _, accessControlList := range request.AccessControlList {
+		acl = append(acl, jobs.JobAccessControlResponse{
+			UserName:             accessControlList.UserName,
+			ServicePrincipalName: accessControlList.ServicePrincipalName,
+			GroupName:            accessControlList.GroupName,
+			AllPermissions: []jobs.JobPermission{
+				{
+					PermissionLevel: accessControlList.PermissionLevel,
+				},
+			},
+		})
+	}
+
+	return Response{Body: jobs.JobPermissions{
+		AccessControlList: acl,
+		ObjectType:        "job",
+		ObjectId:          jobId,
+	}}
+}
+
+func (s *FakeWorkspace) JobsGetPermissions(req Request, jobId string) Response {
+	jobPermissions := s.JobPermissions[jobId]
+	var acl []jobs.JobAccessControlResponse
+	for _, accessControlList := range jobPermissions {
+		acl = append(acl, jobs.JobAccessControlResponse{
+			UserName:             accessControlList.UserName,
+			DisplayName:          accessControlList.UserName,
+			ServicePrincipalName: accessControlList.ServicePrincipalName,
+			GroupName:            accessControlList.GroupName,
+			AllPermissions: []jobs.JobPermission{
+				{
+					PermissionLevel: accessControlList.PermissionLevel,
+					ForceSendFields: []string{"Inherited"},
+				},
+			},
+		})
+	}
+
+	return Response{Body: jobs.JobPermissions{
+		AccessControlList: acl,
+		ObjectType:        "job",
+		ObjectId:          "/jobs/" + jobId,
+	}}
+}
+
 func setSourceIfNotSet(job jobs.Job) jobs.Job {
 	if job.Settings != nil {
 		source := "WORKSPACE"
diff --git a/libs/testserver/schemas.go b/libs/testserver/schemas.go
index 94c63b0627..4dace522be 100644
--- a/libs/testserver/schemas.go
+++ b/libs/testserver/schemas.go
@@ -60,3 +60,43 @@ func (s *FakeWorkspace) SchemasUpdate(req Request, name string) Response {
 		Body: existing,
 	}
 }
+
+func (s *FakeWorkspace) SchemasUpdateGrants(req Request, fullName string) Response {
+	var request catalog.UpdatePermissions
+	if err := json.Unmarshal(req.Body, &request); err != nil {
+		return Response{
+			StatusCode: http.StatusBadRequest,
+			Body:       fmt.Sprintf("request parsing error: %s", err),
+		}
+	}
+	defer s.LockUnlock()()
+
+	// For simplicity, we'll just replace all grants (similar to how job permissions work)
+	var grants []catalog.PrivilegeAssignment
+	for _, change := range request.Changes {
+		if len(change.Add) > 0 {
+			grants = append(grants, catalog.PrivilegeAssignment{
+				Principal:  change.Principal,
+				Privileges: change.Add,
+			})
+		}
+	}
+	s.SchemasGrants[fullName] = grants
+
+	return Response{
+		Body: catalog.GetPermissionsResponse{
+			PrivilegeAssignments: grants,
+		},
+	}
+}
+
+func (s *FakeWorkspace) SchemasGetGrants(req Request, fullName string) Response {
+	defer s.LockUnlock()()
+
+	grants := s.SchemasGrants[fullName]
+	return Response{
+		Body: catalog.GetPermissionsResponse{
+			PrivilegeAssignments: grants,
+		},
+	}
+}